12. When should the quadratic formula be used to find the roots of a quadratic equation, ax²+bx+c=0? If the factors of b do not have a sum of a, then the quadratic formula is necessary. If the factors of c do not have a sum of a, then the quadratic formula is necessary. O If the factors of b do not have a sum of c and the value of a is 1, then the quadratic formula is necessary. If the factors of c do not have a sum of b and the value of a is 1, the quadratic formula is necessary. 13. Simplify a√/27 - 2√/3a². C √27-3a² 27-3a² a√3 24a²
12. When should the quadratic formula be used to find the roots of a quadratic equation, ax²+bx+c=0? If the factors of b do not have a sum of a, then the quadratic formula is necessary. If the factors of c do not have a sum of a, then the quadratic formula is necessary. O If the factors of b do not have a sum of c and the value of a is 1, then the quadratic formula is necessary. If the factors of c do not have a sum of b and the value of a is 1, the quadratic formula is necessary. 13. Simplify a√/27 - 2√/3a². C √27-3a² 27-3a² a√3 24a²
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Transcribed Image Text:12. When should the quadratic formula be used to find the roots of a quadratic equation, ax² + bx + c = 0?
If the factors of b do not have a sum of a, then the quadratic formula is necessary.
If the factors of c do not have a sum of a, then the quadratic formula is necessary.
If the factors of b do not have a sum of c and the value of a is 1, then the quadratic formula is necessary.
If the factors of c do not have a sum of b and the value of a is 1, the quadratic formula is necessary.
13. Simplify a√27 - 2√3a².
27-3a²
O-√27-3a²
O a√3
O 24a²
Transcribed Image Text:14. Use the quadratic formula to find the roots of the equation: 2x² + 5x – 42 = 0.
x = -4 and x =
x = -7 and x = -6
x = -6 and x =
X =
6
7
=
=
15. A triangle with a base of
52
and x = 2
O 12-m²-m
O 12-²³-m
3
1|2
3
7
O 12-m²-³m
4
4
9
3
O 12 = ²m-²/
4
4
(1-m-3)
and a height of 2m has an area of 12 square units. Determine the equation that can be used to determine the value of m.
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